Wednesday

November 26, 2014

November 26, 2014

Posted by **Andrea** on Friday, March 15, 2013 at 10:59am.

Average SD Number of Students

Section 1 68 9 20

Section 2 75 9 25

Section 3 60 9 32

Find the average score of all the students in the class.

- Statistics -
**PsyDAG**, Friday, March 15, 2013 at 11:12amMean = ∑x/n --> n(mean) = ∑x

(68*20) + (75*25) + (60*32) = ?

Divide that by 20 + 25 + 32 = ?

- Statistics -
**Andrea**, Friday, March 15, 2013 at 11:48amThanks I got it

**Answer this Question**

**Related Questions**

math - Statistics: Analyze student exam scores Students were given an exam with ...

Statistics - In Professor Smith's statistics course, the correlation between ...

Stats - a teacher teaches two sections (A and B) of a class. Both sections have ...

Statistics - Students were given an exam with 300 multiple-choice questions. The...

Statistics help? - Hi there, I was looking for any assistance or help on how I ...

Statistics on Psychology - Hi there, I was looking for any assistance or help on...

algebra - An exam consists of two parts, Section X and Section Y. There can be a...

Algebra 1 - An exam consists of two parts, Section X and Section Y. There can be...

math - An exam consists of two parts, Section X and Section Y. There can be a ...

statistics - Answer the question(s) based on the following situation: 150 ...